CN113147366A - Cooling system of plateau type hybrid vehicle - Google Patents
Cooling system of plateau type hybrid vehicle Download PDFInfo
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- CN113147366A CN113147366A CN202110447375.2A CN202110447375A CN113147366A CN 113147366 A CN113147366 A CN 113147366A CN 202110447375 A CN202110447375 A CN 202110447375A CN 113147366 A CN113147366 A CN 113147366A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a cooling system of a high prototype hybrid vehicle, which comprises a cooling fan, a third circulation loop for cooling a first cooling object and a cooling circulation loop for cooling a second cooling object, wherein the third circulation loop is used for cooling the first cooling object; the third circulation loop comprises a third heat exchanger, the cooling circulation loop comprises a heat exchanger group, the third heat exchanger is communicated with the heat exchanger group through a pipeline, heat in the third circulation loop is transmitted to the heat exchanger group through the third heat exchanger, and the cooling fan is used for dissipating heat of the heat exchanger group. The third circulation loop is integrated into the cooling circulation loop through the third heat exchanger, so that the equipment space can be greatly saved, the consumption of auxiliary machines is reduced, and the utilization rate of the system is improved; for the extreme working environment of severe cold, when the vehicle is switched from diesel power to electric power, the cooling fan is modulated to rotate at low speed by high-speed rotation, the cooling fan does not need to be stopped, and the risk that the cooling fan is frozen because the cooling fan needs to be stopped when the diesel power is switched to the electric power can be avoided.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a cooling system of a plateau type hybrid electric vehicle.
Background
The cold environment in the plateau is extremely harsh to a cooling system for forced ventilation cooling, and cooling equipment is easily affected by severe weather such as thin plateau air, large day and night temperature difference in the plateau, high cold and the like. For equipment exposed to air, the equipment is extremely vulnerable to snow or sleet, and in the case of power switching, the cooling ventilator is very likely to be frozen in the case of sleet or sleet when not rotating, causing system shutdown failure.
In addition, the transformer cooling systems of the traditional motor train unit, the motor locomotive and the internal combustion engine all adopt independent oil cooling system technologies, and a plurality of cooling systems are required to be configured on the hybrid power vehicle, so that the problem of large occupied space of the cooling systems exists.
In view of the foregoing, there is a need for a cooling system for a high prototype hybrid vehicle to solve the problems of the prior art.
Disclosure of Invention
The invention aims to provide a cooling system of a plateau type hybrid vehicle, aiming at solving the problems that the existing cooling system of the hybrid vehicle occupies large space, cooling equipment is easily influenced by the high and cold working environment of the plateau, and a cooling fan is easily frozen during power switching, and the specific technical scheme is as follows:
a cooling system for a plateau type hybrid vehicle comprises a cooling fan, a third circulation loop for cooling a first cooling object and a cooling circulation loop for cooling a second cooling object; the third circulation loop comprises a third heat exchanger, the cooling circulation loop comprises a heat exchanger group, the third heat exchanger is communicated with the heat exchanger group through a pipeline, heat in the third circulation loop is transmitted to the heat exchanger group through the third heat exchanger, and the cooling fan is used for dissipating heat of the heat exchanger group.
Preferably, in the above technical solution, the cooling circulation loop includes a first circulation loop and a second circulation loop which are arranged in parallel, the heat exchanger group includes a first heat exchanger and a second heat exchanger, the first heat exchanger is arranged in the first circulation loop, the second heat exchanger is arranged in the second circulation loop, and the cooling air of the cooling fan passes through the first heat exchanger and the second heat exchanger in sequence; the third heat exchanger is communicated with the first heat exchanger or/and the second heat exchanger through a pipeline.
Preferably, in the above technical solution, the first cooling object is a transformer, and the second cooling object is a diesel engine;
the heat dissipation temperature of the first circulation loop is lower than that of the second circulation loop, and the third heat exchanger is communicated with the first heat exchanger through a pipeline.
In the above technical solution, preferably, the diesel engine is provided with a first channel and a second channel through which a cooling medium circulates, the first channel includes a first outlet and a first inlet, and the second channel includes a second outlet and a second inlet; the first outlet is communicated with the inlet of the first heat exchanger through a third pipeline, and the outlet of the first heat exchanger is communicated with the first inlet through a fourth pipeline; the second outlet is communicated with the inlet of the second heat exchanger through a fifth pipeline, and the outlet of the second heat exchanger is communicated with the second inlet through a sixth pipeline.
Preferably, the third pipeline and the fifth pipeline are respectively provided with a first expansion water tank and a second expansion water tank, and the first expansion water tank and the second expansion water tank are respectively provided with a first pressure regulating valve and a second pressure regulating valve.
Preferably, in the above technical solution, the transformer is provided with a third channel through which a cooling medium circulates, and the third channel includes a third outlet and a third inlet; the first outlet of the third heat exchanger is communicated with the first inlet of the third heat exchanger through a seventh pipeline; a second inlet of the third heat exchanger is communicated with a fourth pipeline through a second pipeline, and a second outlet of the third heat exchanger is communicated with a third pipeline through a first pipeline;
a first one-way valve and a second one-way valve are respectively arranged on the first pipeline and the third pipeline;
and a circulating oil pump is arranged on the eighth pipeline, and a circulating water pump is arranged on the first pipeline.
Preferably, an expansion oil tank is arranged on the seventh pipeline, and an air dryer is arranged on the expansion oil tank.
Preferably, in the above technical solution, the third circulation loop further includes a buchholz relay, one end of the buchholz relay is connected to the expansion tank, and the other end of the buhholz relay is connected to the transformer.
Preferably, in the above technical solution, the cooling system is disposed on a top of a vehicle, the top of the vehicle is provided with a cavity, and a bottom of the cooling system sinks into the cavity; the first expansion water tank and the second expansion water tank are arranged at the highest position of the cooling system, and liquid level sensors are arranged in the first expansion water tank and the second expansion water tank.
Preferably, in the above technical scheme, the surface of the impeller of the cooling fan is provided with a nano coating, and the contact angle of the nano coating is larger than 105 °.
The technical scheme of the invention has the following beneficial effects:
according to the cooling system, the diesel engine is cooled through the first circulation loop and the second circulation loop, so that the high-temperature and low-temperature composite cooling requirements of the diesel engine are met; the third heat exchanger is used for integrating the third circulation loop into the cooling circulation loop, so that the integration of transformer cooling and diesel engine cooling is realized, the equipment space can be greatly saved, the consumption of auxiliary machines is reduced, and the utilization rate of the system is improved; for the extreme working environment of severe cold, when the vehicle is switched from diesel power to electric power, the cooling fan is modulated to rotate at low speed by high-speed rotation, the cooling fan does not need to be stopped, and the risk that the cooling fan is frozen because the cooling fan needs to be stopped when the diesel power is switched to the electric power can be avoided.
For the high plateau type power centralized motor train unit vehicle, due to the fact that electric power and diesel power are integrated, the arrangement space of the whole vehicle is limited, the cooling system is arranged on the top of the vehicle, the space arrangement between vehicle machines can be greatly liberated, and conditions are provided for resource integration of the whole vehicle.
The impeller surface of the cooling fan is provided with the nano coating, the contact angle of the nano coating is larger than 105 degrees, the hydrophobicity of the impeller surface is increased, the fault caused by freezing due to the fact that water drops are collected on the impeller surface can be avoided, and the cooling fan is well suitable for the high and cold working environment.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a cooling system of the present invention;
101, a cooling fan, 102, a first heat exchanger, 103, a second heat exchanger, 104, a diesel engine, 105, a transformer, 106, a third heat exchanger, 107, a circulating oil pump, 108, a circulating water pump, 109, an expansion oil tank, 110, an air dryer, 111, a first expansion water tank, 112, a second expansion water tank, 113, a first pressure regulating valve, 114, a second pressure regulating valve, 115, a first pipeline, 116, a second pipeline, 117, a third pipeline, 118, a fourth pipeline, 119, a fifth pipeline, 120, a sixth pipeline, 121, a seventh pipeline, 122, an eighth pipeline, 123, cooling air, 124, a first check valve, 125, a second check valve, 126 and a buchh relay.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1:
referring to fig. 1, a cooling system for a high prototype hybrid vehicle includes a cooling fan 101, a third circulation circuit for cooling a first cooling object, and a cooling circulation circuit for cooling a second cooling object; the third circulation loop comprises a third heat exchanger 106, the cooling circulation loop comprises a heat exchanger group, the third heat exchanger 106 is communicated with the heat exchanger group through a pipeline, heat in the third circulation loop is transferred to the heat exchanger group through the third heat exchanger 106, and the cooling fan 101 is used for dissipating heat of the heat exchanger group. Specifically, the first cooling object and the second cooling object are from two different power compositions.
Preferably, the cooling circulation loop comprises a first circulation loop and a second circulation loop which are arranged in parallel, the heat exchanger group comprises a first heat exchanger 102 and a second heat exchanger 103, the first heat exchanger 102 is arranged in the first circulation loop, the second heat exchanger 103 is arranged in the second circulation loop, and the cooling air 123 of the cooling fan 101 sequentially passes through the first heat exchanger 102 and the second heat exchanger 103, namely the cooling air 123 sequentially exchanges heat with the first heat exchanger and the second heat exchanger, and then enters the atmosphere, so that the heat of the first heat exchanger and the second heat exchanger is taken away; the third heat exchanger 106 is in communication with the first heat exchanger 102 or/and the second heat exchanger 103 via piping.
In this embodiment, the first cooling object is preferably a transformer 105, and the second cooling object is preferably a diesel engine 104.
The heat dissipation temperature of the first circulation loop is lower than that of the second circulation loop, namely, the first circulation loop is a low-temperature circulation loop, the second circulation loop is a high-temperature circulation loop, the first circulation loop and the second circulation loop can be used for realizing high-temperature and low-temperature combined cooling of the diesel engine, and the third heat exchanger 106 is communicated with the first heat exchanger 102 through a pipeline. In this embodiment, preferably, the cooling medium in the first circulation loop and the second circulation loop is cooling water, the cooling medium in the third circulation loop is cooling oil, the third heat exchanger is an oil-water heat exchanger, and the first heat exchanger and the second heat exchanger are water heat exchangers.
In detail, referring to fig. 1, a first channel and a second channel through which a cooling medium flows are provided on the diesel engine 104, the first channel includes a first outlet and a first inlet, and the second channel includes a second outlet and a second inlet; the first outlet is communicated with the inlet of the first heat exchanger 102 through a third pipeline 117, and the outlet of the first heat exchanger 102 is communicated with the first inlet through a fourth pipeline 118, so that a first circulation loop is formed; the second outlet is communicated with the inlet of the second heat exchanger 103 through a fifth pipeline 119, and the outlet of the second heat exchanger 103 is communicated with the second inlet through a sixth pipeline 120, so that a second circulation loop is formed.
The third pipeline 117 and the fifth pipeline 119 are respectively provided with a first expansion water tank 111 and a second expansion water tank 112, the first expansion water tank 111 and the second expansion water tank 112 are respectively provided with a first pressure regulating valve 113 and a second pressure regulating valve 114, and the first pressure regulating valve and the second pressure regulating valve are used for maintaining the system pressure to be stable.
A third channel through which a cooling medium flows is arranged on the transformer 105, the third channel comprises a third outlet and a third inlet, the third outlet is communicated with the first inlet of the third heat exchanger 106 through an eighth pipeline 122, and the first outlet of the third heat exchanger 106 is communicated with the third inlet through a seventh pipeline 121, so that a third circulation loop is formed; the second inlet of the third heat exchanger 106 is communicated with a fourth pipeline 118 through a second pipeline 116, and the second outlet of the third heat exchanger 106 is communicated with a third pipeline 117 through a first pipeline 115.
The first pipeline 115 and the third pipeline 117 are respectively provided with a first check valve 124 and a second check valve 125, and the first check valve and the second check valve ensure that the first circulation loop and the third circulation loop are normally switched, and the work of the two circulation loops is not influenced by each other.
Further, the cooling medium inside the second pipeline 116 and the first pipeline 115 is the same as the cooling medium in the first circulation loop, and both are cooling liquid; in the third heat exchanger, the cooling oil in the third circulation loop exchanges heat with the cooling liquid in the third heat exchanger, the cooling liquid takes away the heat of the cooling oil and enters the first heat exchanger, and then the heat exchange is carried out with the cooling air through the first heat exchanger, so that the purpose of heat dissipation of the transformer is achieved.
Preferably, a circulating oil pump 107 is arranged on the eighth pipeline 122, and a circulating water pump 108 is arranged on the first pipeline 115. And the circulating oil pump and the circulating water pump are used for providing power for the circulating loop.
Preferably, an expansion oil tank 109 is arranged on the seventh pipeline 121, and an air dryer 110 is arranged on the expansion oil tank 109. The expansion tank 109 is used to prevent the cooling system from being affected by temperature changes.
It is further preferred that the third circulation loop further comprises a buchholz relay 126, one end of which is connected to the expansion tank 109 and the other end of which is connected to the transformer 105, and the buchholz relay is used for providing a signal when the system suddenly has a too high flow rate or a large amount of gas is gathered to be out of order due to a fault.
Preferably, the cooling system is arranged on the top of the vehicle, the top of the vehicle is provided with a concave cavity, the bottom of the cooling system is sunk into the concave cavity, and specifically, the cooling system is fixedly connected with the top beam of the vehicle through a mounting beam.
First expansion tank and second expansion tank set up in cooling system's highest position department, first expansion tank and the inside level sensor that all is equipped with of second expansion tank, preferred first expansion tank and second expansion tank are an expansion tank subassembly, under the structural strength circumstances, have greatly saved expansion tank's installation space, have reduced cooling system's size.
The plateau type hybrid power motor train unit cooling system is arranged on the top of a vehicle, the operating characteristics of the vehicle in a severe cold region are known, the cooling fan arranged on the top of the vehicle is very likely to be affected by heavy snow or sleet, and the surface of the impeller is likely to be frozen due to accumulated liquid under the condition of sleet or sleet.
In the embodiment, the number of the cooling fans is multiple, and the cooling fans adopt an axial flow ventilation mode; the motor of the cooling fan can adopt a permanent magnet and a variable frequency motor, and the stepless speed change operation of the cooling fan can be realized; the system can control the performance of the cooling fan according to the actual cooling demand, can effectively improve the efficiency and reliability of the system, reduces the consumption of auxiliary machines of the system, and saves the energy of the system.
The technical scheme of the embodiment is specifically as follows:
when the vehicle works under the power of diesel oil, the heat is dissipated through the first circulation loop and/or the second circulation loop, and the rotating speed of the cooling fan can be adjusted according to the heat dissipation amount.
When the vehicle is switched from diesel power to electric power, the diesel engine system stops working, the diesel power is switched to electric traction, and the transformer starts working. For the cooling system, the circulating oil pump 107 and the circulating water pump 108 start to operate, the third circulating loop starts to operate, heat exchange is achieved in the third heat exchanger 106, the circulating water pump 108 conveys the cooling liquid after heat exchange to the first heat exchanger 102, cooling air exchanges heat with the first heat exchanger 102 to cool the cooling liquid, and the cooled cooling liquid continuously flows back to the third heat exchanger 106 through the second pipeline 116 to exchange heat, so that continuous cooling of the transformer 105 is achieved; when diesel power is switched to electric power for operation, the cooling fan 101 is switched from high-speed operation to low-speed operation, and the cooling fan does not need to be stopped in the whole operation process, so that the cooling fan is prevented from being frozen.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A cooling system for a highland type hybrid vehicle is characterized by comprising a cooling fan (101), a third circulation loop for cooling a first cooling object and a cooling circulation loop for cooling a second cooling object; the third circulation loop comprises a third heat exchanger (106), the cooling circulation loop comprises a heat exchanger group, the third heat exchanger (106) is communicated with the heat exchanger group through a pipeline, so that heat in the third circulation loop is transferred to the heat exchanger group through the third heat exchanger (106), and the cooling fan (101) is used for dissipating heat of the heat exchanger group.
2. The plateau type hybrid vehicle cooling system according to claim 1, wherein the cooling circulation loop includes a first circulation loop and a second circulation loop arranged in parallel, the heat exchanger group includes a first heat exchanger (102) and a second heat exchanger (103), the first heat exchanger (102) is arranged in the first circulation loop, the second heat exchanger (103) is arranged in the second circulation loop, and the cooling air (123) of the cooling fan (101) passes through the first heat exchanger (102) and the second heat exchanger (103) in sequence; the third heat exchanger (106) is communicated with the first heat exchanger (102) or/and the second heat exchanger (103) through pipelines.
3. The plateau type hybrid vehicle cooling system according to claim 2, wherein the first cooling object is a transformer (105), and the second cooling object is a diesel engine (104);
the heat dissipation temperature of the first circulation loop is lower than that of the second circulation loop, and the third heat exchanger (106) is communicated with the first heat exchanger (102) through a pipeline.
4. A high altitude hybrid vehicle cooling system according to claim 3, wherein the diesel engine (104) is provided with a first passage and a second passage through which a cooling medium circulates, the first passage includes a first outlet and a first inlet, and the second passage includes a second outlet and a second inlet; the first outlet is communicated with the inlet of the first heat exchanger (102) through a third pipeline (117), and the outlet of the first heat exchanger (102) is communicated with the first inlet through a fourth pipeline (118); the second outlet is communicated with the inlet of the second heat exchanger (103) through a fifth pipeline (119), and the outlet of the second heat exchanger (103) is communicated with the second inlet through a sixth pipeline (120).
5. The plateau type hybrid vehicle cooling system as recited in claim 5, wherein a first expansion tank (111) and a second expansion tank (112) are provided on the third pipeline (117) and the fifth pipeline (119), respectively, and a first pressure regulating valve (113) and a second pressure regulating valve (114) are provided on the first expansion tank (111) and the second expansion tank (112), respectively.
6. A high altitude hybrid vehicle cooling system according to claim 5, characterized in that a third channel for circulation of cooling medium is provided on the transformer (105), the third channel comprising a third outlet and a third inlet; the third outlet is communicated with the first inlet of a third heat exchanger (106) through an eighth pipeline (122), and the first outlet of the third heat exchanger (106) is communicated with the third inlet through a seventh pipeline (121); the second inlet of the third heat exchanger (106) is communicated with a fourth pipeline (118) through a second pipeline (116), and the second outlet of the third heat exchanger (106) is communicated with a third pipeline (117) through a first pipeline (115);
a first check valve (124) and a second check valve (125) are respectively arranged on the first pipeline (115) and the third pipeline (117);
and a circulating oil pump (107) is arranged on the eighth pipeline (122), and a circulating water pump (108) is arranged on the first pipeline (115).
7. A plateau type hybrid vehicle cooling system as recited in claim 6, wherein an expansion oil tank (109) is provided on the seventh pipeline (121), and an air dryer (110) is provided on the expansion oil tank (109).
8. The plateau type hybrid vehicle cooling system according to claim 7, wherein the third circulation loop further includes a buhr relay (126), the buhr relay (126) being connected to the expansion tank (109) at one end and to the transformer (105) at the other end.
9. A highland type hybrid vehicle cooling system as set forth in claim 8, wherein said cooling system is provided on a vehicle top, said vehicle top is provided with a cavity, and a bottom of said cooling system sinks into said cavity; the first expansion water tank and the second expansion water tank are arranged at the highest position of the cooling system, and liquid level sensors are arranged in the first expansion water tank and the second expansion water tank.
10. The high prototype hybrid vehicle cooling system of claim 1, wherein the impeller surface of the cooling blower (101) is provided with a nano-coating having a contact angle greater than 105 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110447375.2A CN113147366B (en) | 2021-04-25 | 2021-04-25 | Cooling system of plateau type hybrid vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110447375.2A CN113147366B (en) | 2021-04-25 | 2021-04-25 | Cooling system of plateau type hybrid vehicle |
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| CN113147366B CN113147366B (en) | 2023-03-24 |
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Cited By (2)
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| CN113629980A (en) * | 2021-08-17 | 2021-11-09 | 远景能源有限公司 | Group string type energy storage heat dissipation system |
| CN113978488A (en) * | 2021-11-12 | 2022-01-28 | 中车大连机车车辆有限公司 | Double-power-source locomotive fusion cooling system and control method |
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| CN113978488A (en) * | 2021-11-12 | 2022-01-28 | 中车大连机车车辆有限公司 | Double-power-source locomotive fusion cooling system and control method |
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| Publication number | Publication date |
|---|---|
| CN113147366B (en) | 2023-03-24 |
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